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To drive the fan correctly you need a 555 timer or a double ... Nel forum User mods - OctoPrint, enclosures, nozzles, ... |
7 years fa |
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Maybe this explains why the Prusa I3 MK3 can't read RPM's th... Nel forum User mods - OctoPrint, enclosures, nozzles, ... |
7 years fa |
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Well, it turns out the existing magic is good enough. Here ... Nel forum User mods - OctoPrint, enclosures, nozzles, ... |
7 years fa |
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I was testing it without the Einsy connected.
However, if I... Nel forum User mods - OctoPrint, enclosures, nozzles, ... |
7 years fa |
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Ooops. Except now the rate at which pulses are received is ... Nel forum User mods - OctoPrint, enclosures, nozzles, ... |
7 years fa |
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I'd call that progress. Looks like it still has the PWM sig... Nel forum User mods - OctoPrint, enclosures, nozzles, ... |
7 years fa |
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Thanks! Here's what the TACH signal looks like with a 10K p... Nel forum User mods - OctoPrint, enclosures, nozzles, ... |
7 years fa |
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My knowledge of analog is close to zilch. Anything beyond O... Nel forum User mods - OctoPrint, enclosures, nozzles, ... |
7 years fa |
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No worries. Your idea may bear fruit anyway. I added 2v to... Nel forum User mods - OctoPrint, enclosures, nozzles, ... |
7 years fa |
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Can you use the TACH'S HI-LO to drive a FET to get it at dec... Nel forum User mods - OctoPrint, enclosures, nozzles, ... |
7 years fa |
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I should have routed the TACH signal to A0 instead of D9, be... Nel forum User mods - OctoPrint, enclosures, nozzles, ... |
7 years fa |
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Sounds good. A proper feed back loop and set point to contro... Nel forum User mods - OctoPrint, enclosures, nozzles, ... |
7 years fa |
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While waiting for the parts to arrive, I converted the schem... Nel forum User mods - OctoPrint, enclosures, nozzles, ... |
7 years fa |
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I wasn't getting a very clean waveform using just an atmega3... Nel forum User mods - OctoPrint, enclosures, nozzles, ... |
7 years fa |
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I suppose the right way to go would be to find out if the ta... Nel forum User mods - OctoPrint, enclosures, nozzles, ... |
7 years fa |
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Martin,
I'm not sure whether Prusa's blower speed control pr... Nel forum Hardware, firmware and software help |
7 years fa |
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Meanwhile, entirely separate from the above, the blower moto... Nel forum User mods - OctoPrint, enclosures, nozzles, ... |
7 years fa |
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Final thoughts: The PWM is operating at 500Hz. It is audib... Nel forum User mods - OctoPrint, enclosures, nozzles, ... |
7 years fa |
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Final thoughts: The PWM is operating at 500Hz. It is audib... Nel forum User mods - OctoPrint, enclosures, nozzles, ... |
7 years fa |
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I did some experiments and found that if I drive the PWM at ... Nel forum User mods - OctoPrint, enclosures, nozzles, ... |
7 years fa |
